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Dehydration of the off-flavor chemical 2-methylisoborneol by the R-limonene-degrading bacteria Pseudomonas sp. strain 19-rlim and Sphingomonas sp. strain BIR2-rlima

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Abstract

The terpene 2-methylisoborneol (MIB), a major cause of off-flavor in farm-raised catfish and drinking water, is transformed by various different terpene-degrading bacteria. Two of these, the R-limonene-degrading strains Pseudomonas sp. 19-rlim and Sphingomonas sp. BIR2-rlima, dehydrated MIB with the formation of odorless metabolites 2-methylenebornane and 4-methylcamphene. These metabolites which have a structural resemblance to camphor, could be further transformed by camphor-degrading bacteria to more oxidized products. The bacterial dehydrations demonstrated here may have application in removing MIB where it is a problem.

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Authors and Affiliations

  1. Southern Regional Research Center, Agricultural Research Service, U. S. Department of Agriculture, New Orleans, LA, 70124, USA

    Richard W. Eaton

  2. 3321 Octavia Avenue, New Orleans, LA, 70125, USA

    Richard W. Eaton

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  1. Richard W. Eaton
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Correspondence to Richard W. Eaton.

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Eaton, R.W. Dehydration of the off-flavor chemical 2-methylisoborneol by the R-limonene-degrading bacteria Pseudomonas sp. strain 19-rlim and Sphingomonas sp. strain BIR2-rlima. Biodegradation 23, 253–261 (2012). https://doi.org/10.1007/s10532-011-9504-y

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  • DOI: https://doi.org/10.1007/s10532-011-9504-y

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